Optimate 3

More battery powerLonger battery lifeSave your ΓÇ£deadΓÇ¥ batterySuitable for all types of 12V lead-acid batteries of rated capacity from 2 to 50 Ah.DIAGNOSES sulfated battery conditionRECOVERS severely neglected batteries from as low as 2 Volts.Automatic hourly TESTS. Advance warning of problems.MAINTENANCE : Interactive float charge, max 800mA possible.SAFE: No risk of overcharging. Totally safe for vehicle electronics. Sparks suppressed. Safe for long-term battery maintenance. Automatic shut-down if short-circuited or battery disconnected.